PH Buffer Powder 4.01/6.86/9.18 (3 packs of each)

his price is for (3 packages of each pH 4.01, pH 6.86, pH 9.01 powder)

• Calibration powders enable a quick test of your pH testers/meters to get accurate results of the pH balance in your pool, SPA or hydroponics, drinking water or aquariums.
• Powder buffer solution provide long shelf life and stability and are ideal for low volume use.
• Each pack makes 250mL of buffer solution.
• Includes 3 packages of each pH 4.01, pH 6.86, pH 9.01 powder
• It provides indefinite or long shelf life and stability, ideal for low volume use.
• It’s lightweight, inexpensive and takes up very little space.
• These buffers are accurate to within ±0.01pH units @ 25°C and remain stable over long periods of time